general editors Michael Orme, Susanna Graham-Jones
Penguin Group, 1989
Buku Referensi
Bansal, H.L.
B. Jain Publisher, 1989
Buku Teks SO
Kim, Hana
KPG (Kepustakaan Popular Gramedia), 2024
Buku Teks SO
Terry, Quinlan
Academic Press, 1994
Buku Teks SO
Clinard, Marshall B. [Marshall Barron]
Tree Press, 1966
Buku Teks SO